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The Hopper generation of NVIDIA GPUs first enabled the use of low-precision float8 data types for training via TensorCore acceleration. However, the recipe to best leverage it was far from settled. Practitioners had to find their way through many entangled decisions around accuracy-vs-efficiency, precision-vs-range, overflows-vs-underflows, and more. The frontier was further push forward by the DeepSeek release, and then by the micro-scaling formats introduced by Blackwell. In this talk we will go through all these approaches, comparing their pros and cons, thus guiding researchers in finding the options that work best for them.
Research Engineer in Meta's Fundamental AI Research team (FAIR). At the intersection of research and infrastructure, Luca specialized in training efficiency and distributed communication. Regular contributor to PyTorch.
